I’m quite sure it is. I think the problem is locating a rekluse from someone. I don’t believe you can buy one from the rekluse manufacturer just because they don’t make them anymore. I could be wrong though.
I have one my 2009 450XC. Only used it a few times. Not really my cup of tea as an old school bike guy. But I know a lot of people love them. May be able to part with it if I can convince my wife to back to a normal clutch.
I have the Rekluse clutch on my 570xc and 540xc. Both work great. I dont think they are listed but last time i called they sold them along with the parts. I have purchased both mine on here. I replaced the clutch disks and springs before I installed. Take pictures as you take it apart. Makes it easier to put back together. Buy a new lock for the nut.